13 results about "Plasma polymerization" patented technology

A method of forming an insulating film includes supplying a precursor gas to a substrate to generate a fluidic oligomer by plasma polymerization and deposit the fluidic oligomer on the substrate, performing a plasma process on the substrate after the depositing the fluidic oligomer, so that at least a part of the fluidic oligomer is hydrogen-terminated while maintaining fluidity of the fluidic oligomer, and subsequently performing an annealing process, which includes a plasma process, on the substrate to form the insulating film.

The invention relates to the technical field of anticoagulant coatings, and discloses an ePTFE membrane grafted with a heparin and aminated hyaluronic acid coating and a preparation method. According to the method for preparing the ePTFE membrane grafted with the heparin and aminated hyaluronic acid coating, a primer layer is formed on the surface of the ePTFE membrane in a plasma polymerization mode, and heparin and hyaluronic acid are chemically and covalently grafted on the primer layer, so that the surface of the membrane has long-term stability and an anticoagulation effect; the problems that in the prior art, reaction is complex, solvent residues easily exist, stability is poor, the anticoagulant effect is poor, and gaps are blocked are solved.

To improve the membrane coating characteristics in ion exchange membrane applications using woven mesh fabric as a reinforcing material. [Solution] A woven mesh fabric containing monofilament fibers in the warp and weft of one of the polymers polyphenylene sulfide, polyether ether ketone, and liquid crystal polyester is subjected to at least one heat treatment to fix the mesh openings to a desired size, stabilize the monofilament fibers, and remove surface contaminants. One or more pretreatment steps are carried out, including a plasma pretreatment step and / or a plasma etching step. A plasma coating is deposited on the woven mesh fabric by plasma polymerization incorporating at least one functional group selected from the group consisting of hydroxyl groups, carboxyl groups, amino groups, and sulfonic acid groups. The woven mesh fabric has a filament diameter of 10 μm to 60 μm, a mesh opening of 20 μm or more, and a fabric thickness of 20 μm to 80 μm.

The invention discloses a physical vapor deposition (PVD) coating method for a broken bridge aluminum profile, which is characterized in that a high-performance composite coating is formed on the surface of the profile through precise pretreatment, optimized multi-level PVD deposition and optional plasma polymerization post-treatment. Wherein the deposition process is completed in a special PVD coating system, and the system ensures that a complex-section profile with the length of 6 meters obtains a uniform film layer through the design of a planet carrier capable of revolving and rotating and a plasma enhancing device. According to the method, the problems of uniformity and binding force of long building materials treated through a traditional PVD technology are solved, the obtained coating has excellent hardness (larger than or equal to HV1500), corrosion resistance (neutral salt mist is larger than or equal to 1000 hours) and rich decoration effects, the whole process is environmentally friendly, and an innovative surface solution is provided for high-end broken bridge aluminum doors and windows.

The embodiment of the present application provides a protective coating and a preparation method thereof, the protective coating is formed by plasma polymerization coating on the surface of an electronic device, an electrical device, an electronic component or an electrical component, the protective coating is formed by plasma of monomer alpha with a double acrylate structure and monomer beta with more than three carbon-carbon unsaturated bonds, the mass fraction of the monomer beta accounts for 10-35% of the total monomer, and the protective coating can effectively prevent the electronic device, the electrical device, the electronic component or the electrical component from short circuit and failure in a humid or water environment.

According to the invention, there is provided a method of treating a component of a medicament dispensing device wherein the component is an aluminum can having an interior comprising an inner surface that is in contact with a medicament during storage or use of the device, the method comprising the steps of: placing the aluminum can in a chamber; inserting an electrode into the aluminum pot; performing a plasma cleaning step in which a gaseous atmosphere consisting essentially of oxygen and optionally at least one fluorocarbon is introduced into the chamber and a cleaning plasma is generated in the gaseous atmosphere using the electrode in order to clean the aluminum can, the inner surface of the chamber and the electrode; optionally coating the inner surface of the aluminum can with a coating; and depositing a fluorocarbon polymer layer onto the inner surface of the aluminum can by plasma polymerization, or, if present, onto a coating.

The invention discloses a method for preparing a nitric oxide film through atmospheric pressure plasma jet, and belongs to the technical field of plasma medicine. The method comprises the following steps: constructing an atmospheric pressure plasma jet reaction system; inert gas is used as carrier gas, and TEMPO (2, 2, 6, 6-tetramethylpiperidine oxide) monomer steam is carried to enter plasma jet; and controlling the discharge power to be 0.4-2.4 W and the distance between the bottom end of the dielectric tube and the substrate to be 4-6 mm at normal temperature and normal pressure, so that the TEMPO monomer is subjected to plasma polymerization, and the nitric oxide functional film is deposited on the surface of the substrate. The APPJ technology and the TEMPO monomer are combined for the first time, high-content nitrogen-oxygen (N-O) functional groups are successfully reserved in the film through operation under specific mild process parameters, and an efficient, lossless and easy-to-industrialize new way is provided for preparing NO release coatings for medical instruments such as intravascular stents and wound dressings.

This invention relates to a hollow cathode plasma polymerization method for use on fabric substrates, particularly a method for applying a fluoropolymer coating, especially a waterproof and / or oil-resistant coating, to fabric substrates, and products that can be obtained by such methods and systems.

The invention relates to a method of producing an object having a fluorinated polymer coating free of per- and polyfluorinated acids and salts thereof, wherein the method comprises a step DF of depositing a fluorinated polymer coating on the object by means of plasma polymerization of a fluorinated precursor monomer and a step IG of exposing the object to an inhibiting gas which inhibits the formation of per- and polyfluorinated acids and salts thereof in or on the deposited fluorinated coating. Thereby step IG is carried out after step DF, and from the start of step DF until the end of step IG the object is treated in a substantially oxygen free atmosphere.

The present invention relates to a hollow cathode plasma polymerization process applied to a textile substrate, in particular to a process for applying to a textile substrate a halogen-free, in particular fluorine-free, water repellent polymer coating, in particular a durable water repellent coating, and to products obtainable by such processes and systems.

This invention provides a surface-coated in-situ modified hollow fiber membrane material and its preparation method. The preparation method includes the following steps: Step 1, preparing a casting solution; the casting solution is used to prepare a hollow fiber membrane precursor through a spinning process; Step 2, the hollow fiber membrane precursor is sequentially passed through an air gap, a cooling tank, and a solvent exchange tank to obtain a semi-finished membrane; the coolant in the cooling tank is a plasma-treated ethylene glycol aqueous solution; Step 3, the semi-finished membrane is further surface-treated with plasma to obtain a hollow fiber membrane containing a surface polyethylene glycol coating structure. This invention fully utilizes the components of the coolant and combines it with plasma polymerization treatment to perform in-situ modification on the surface of the hollow fiber membrane, rapidly and efficiently forming a polyethylene glycol coating on the surface of the hollow fiber membrane.

The invention discloses a surface coating method for a copper-clad plate, which comprises the following steps: placing the copper-clad plate in a vacuum chamber, and controlling the air pressure in the vacuum chamber to be a first preset air pressure; a gaseous acrylate monomer and nitrogen are introduced into the vacuum chamber, and the air pressure in the vacuum chamber is adjusted to be second preset air pressure; and carrying out plasma polymerization reaction on the surface of the copper-clad plate by adopting a plasma polymerization technology so as to form the protective film. According to the technical scheme, the purpose of heat dissipation can be achieved by coating the surface of the copper-clad plate with the film, and the problem of uneven dispersion when the surface of the copper-clad plate is coated with the heat dissipation coating is avoided.